HRB Fully Insulated Faston Quick Disconnect Terminal, are wire to wire and wire to board connection.
There are 4 series product as below :
HRB 110 series(2.8mm, tab size: 2.8x0.5 or 2.8x0.8),
HRB 187 series(4.8mm, tab size: 4.8x0.5 or 4.8x0.8),
HRB 205 series(5.2mm, tab size: 5.2x0.5 or 5.2x0.8)
HRB 250 series(6.3mm, tab size: 6.3x0.5 or 6.3x0.8)
All above series with straight female and male insulated terminal .
187 and 250 series have flag type terminal.
With different color standing for different wire size, red color insulated terminal: AWG#22-28, blue color insulated terminal: AWG#16-14, and yellow color insulated terminal: AWG#12-10.